Rome Mayor Gianni Alemanno has sent some of his city's famed antiquities on a grand tour of the U.S. to promote the Italian capital's bid for the 2020 Olympic Games. (Associated Press)

Rome Mayor Gianni Alemanno has sent some of his city's famed antiquities on a grand tour of the U.S. to promote the Italian capital's bid for the 2020 Olympic Games. (Associated Press)